APX1105 Ericsson PC200 7.2V Compatible Battery 2500mAh

Ericsson PC200 — 7.2V Ni-MH Replacement Battery (APX1105)

This is a 7.2V, 2500mAh Ni-MH battery pack for the Ericsson PC200 portable two-way radio. It replaces OEM part APX1105 directly, using the same connector and contact arrangement as the original. Capacity is rated at 18Wh — sourced from the same specification as the factory pack.

• PC200 platform fit: The PC200 uses a fixed 7.2V rail with a specific contact layout and BMS handshake sequence. This pack matches that voltage rail and connector geometry, so the radio's power management accepts it without modification.
• Bench tested on actual hardware: We cycled this pack through transmit loads replicating PTT burst patterns. The BMS held stable across repeated high-draw spikes and did not trip into overcurrent cutoff under normal keying cycles.
• First-cycle contact seating on the PC200: If the charger shows a fault LED on first insertion, remove the pack and wipe the gold contact strip with a dry cloth. Reseat firmly — the PC200 charger dock requires a clean contact cycle to complete the initial BMS handshake before charging begins.

Why the PC200 cuts out mid-transmission on a new APX1105 pack

Ni-MH cells ship at storage voltage — typically 1.0–1.1V per cell — not at full charge. Under transmit load, the PC200 draws a sharp current spike the moment PTT is pressed. A pack at storage voltage can't sustain that spike, so the BMS trips overcurrent cutoff and the radio drops. This is not a faulty battery. Run one full charge cycle before the first shift, and the pack will handle transmit loads without tripping.

PC200 bar indicator showing one fewer bar than expected after swap

The PC200 uses a simple voltage-threshold bar indicator — it reads cell voltage directly and maps it to bars. A new Ni-MH pack fresh off the charger sits at a surface charge voltage that dips slightly once current flows, which the radio reads as one bar below full. This is a voltage settling effect, not a capacity problem. Let the pack discharge and recharge once; resting voltage will stabilise and the indicator will read correctly at around 8.4–8.5V off charge.